<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="./js/vue.js"></script>
</head>
<body>
    <div id="root">
        <!-- 管道符：竖线 -->
        <div>{{message | myCut | myAdd}}</div>
    </div>
</body>
<script>
    Vue.config.productionTip = false
    let vm = new Vue({
        el:"#root",
        data:{
            message:"积云教育欢迎你"
        },
        methods: {
            
        },
        filters: {
            myCut(val){
                return val.slice(4,6 )
            },
            myAdd(val){
                return val + "来到北京工作"
            }
        }
    })
</script>
</html>